Even within the minuscule group of deadly serial bombers, there are important distinctions, experts said.
Some of the killers identified by forensic crime researchers selected their targets carefully. Thirty years ago, Walter Moody had a bomb delivered to an Alabama judge he felt was responsible for his misfortunes.
Other killers saw their deadly explosives as a dramatic protest against particular groups, with the individual identities of their victims apparently unimportant. In England, David Copeland’s 1999 bombs targeted blacks, Asians and gays.
Still, researchers have identified some broad characteristics that police turn to in an effort to identify deadly detonators. All have been white men. While they have varied educational attainment, they were of above-average intelligence and mechanically inclined.
Almost always, they were furious.
What You Need to Know: Austin Package Explosions